3=2a+1

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Solution for 3=2a+1 equation:


Simplifying
3 = 2a + 1

Reorder the terms:
3 = 1 + 2a

Solving
3 = 1 + 2a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-2a' to each side of the equation.
3 + -2a = 1 + 2a + -2a

Combine like terms: 2a + -2a = 0
3 + -2a = 1 + 0
3 + -2a = 1

Add '-3' to each side of the equation.
3 + -3 + -2a = 1 + -3

Combine like terms: 3 + -3 = 0
0 + -2a = 1 + -3
-2a = 1 + -3

Combine like terms: 1 + -3 = -2
-2a = -2

Divide each side by '-2'.
a = 1

Simplifying
a = 1

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